Thanks,
CloudFileFeatureLayer is removed and updated with ThinkGeoCloudVectorFeatureLayer/ThinkGeoCloudVectorOverlay in V12. The layer definitions supported in CloudFileFeatureLayer are no longer available in V12. What layer definition were you using in the old version? Maybe we can find you a workaround.
For the SqlTypesGeometryHelper.MakeValid. You can use the SqlGeometry directly.
For CloudFileFeatureLayer and LayerDefinition I talked with my supervisor. We plan to support these in ThinkGeo cloud service. We have few questions for you
a. Do you have any roadmap for your upgrade? We need figure out if we could get this ready on time.
b. Do you only use few areas for USTownship or you need the whole US area?